Approximating statistical functions by using fractional polynomial regression
Approximating statistical functions by using fractional polynomial regression
复制标题
使用分数多项式回归逼近统计函数
DOI:
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发表时间:
1997
期刊:
影响因子:
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通讯作者:
D. Altman
中科院分区:
文献类型:
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作者:
P. Royston;D. Altman
SUMMARY In statistics it is common to require a simple approximating equation for a smooth relationship between Yand X. The exact mathematical form may be known (but complicated) or unknown. We show that fractional polynomials are particularly good at providing concise and accurate formulae for representing such relationships. We give several examples, including the approximation of the 5% point of a statistic used in the analysis of means and of an unbiasing factor for calculating the standard deviation from a doubly censored normal sample.
DOI:
10.1242/jeb.188.1.131
发表时间:
1994
期刊:
The Journal of experimental biology
影响因子:
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作者:
Marsh,RL;John-Alder,HB
通讯作者:
John-Alder,HB